Bonine posted a 4.63 ERA in 68 innings for the Tigers last year with 3.4 K/9 and 2.9 BB/9. The Tigers made a push to bring The 29-year-old back on a minor league deal before the Phillies made a better offer, according to MLB.com's Jason Beck (on Twitter). Both teams expressed interest in Bonine after he became a free agent last week.
Kratz, 30, made his big league debut with the 2010 Pirates after spending nine seasons in the minor leagues. He has a .252/.325/.434 minor league line, but he hit just .118/.167/.118 in 36 big league plate appearances.